.loader{
    font-family: 'zcool kuaile',cursive;
    font-size: 40px;
    color: rgb(61, 201, 201);
}
.loader:after{
    content: '\2026';
    display: inline-block;
    overflow: hidden;
    vertical-align: bottom;
    animation: dots steps(4,end) 2s infinite;
    width: 0px;
}
@keyframes dots{
    to{
        width: 1.25em;/*50px*/
    }
}